MESON Chess Problem Database
Problem Display
PID: 103615 (2R1n3/1pq5/1P2P3/1P2BP1Q/p2N4/KPk1r3/R4p2/1b2bB2 w - - 0 1)
Keirans, Arturs
Keirans, Peteris
Brisbane Sports Referee, 1931
#2
12 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Rxc4#
- 1...Qc5+
- 2.Rxc5#
- 1...Rd3
- 2.Se2#
- 1...Rf3
- 2.Sxf3#
- 1...Rg3
- 2.Sf3#
- 1...Rh3
- 2.Sf3#
- 1...Bc2
- 2.Rxc2#
- 1...Bd3
- 2.Se2#
- 1...Be4
- 2.Sf3#
- 1...Sf6
- 2.Rxc7#
- 1...Sg7
- 2.Rxc7#
- 1...Qc4
- Tries
- 1.Qd1?
- threat
- 2.Se2#
- 1...Qc5+
- 2.Rxc5#
- 1...axb3
- 2.Qxb3#
- 1...Re2
- 2.Sxe2#
- 1...Bd2
- 2.Qxd2#
- 1...Rxe5!
- threat
- 1.Qe2?
- threat
- 2.Qb2#
- 1...Qc5+
- 2.Rxc5#
- 1...Bc2
- 2.Rxc2#
- 2.Qxc2#
- 1...Bd2
- 2.Qxd2#
- 1...Rxe2!
- threat
- 1.Qf3?
- 1...Qc5+
- 2.Rxc5#
- 1...Qxc8
- 2.Sc6#
- 1...Rxf3
- 2.Sxf3#
- 1...Bxa2
- 2.Qxe3#
- 1...Bxf5
- 2.Sxf5#
- 1...axb3
- 2.Sxb3#
- 1...Bc2
- 2.Rxc2#
- 1...Qc4
- 2.Rxc4#
- 1...Qc6
- 2.Sxc6#
- 1...Rd3
- 2.Se2#
- 1...Bd3
- 2.Se2#
- 1...Bd2
- 2.Sc2#
- 1...Sd6
- 2.Sc6#
- 1...Sf6
- 2.Rxc7#
- 1...Sg7
- 2.Rxc7#
- 1...Be4!
- 1...Qc5+
- 1.Qd1?
- Keys
- 1.Qh3!
- 1...Qc5+
- 2.Rxc5#
- 1...Qxc8
- 2.Sc6#
- 1...Rxh3
- 2.Sf3#
- 1...Bxa2
- 2.Qxe3#
- 1...Bxf5
- 2.Sxf5#
- 1...axb3
- 2.Sxb3#
- 1...Bc2
- 2.Rxc2#
- 1...Qc4
- 2.Rxc4#
- 1...Qc6
- 2.Sxc6#
- 1...Rd3
- 2.Se2#
- 1...Rf3
- 2.Sxf3#
- 1...Rg3
- 2.Sf3#
- 1...Bd3
- 2.Se2#
- 1...Be4
- 2.Sf3#
- 1...Bd2
- 2.Sc2#
- 1...Sd6
- 2.Sc6#
- 1...Sf6
- 2.Rxc7#
- 1...Sg7
- 2.Rxc7#
- 1...Qc5+
- 1.Qh3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- Q(h);OGATE::R1(L),XQ(h)
- Q(h);CHECK,OGATE::R(L),XQ(h)
- R(e);SBLOCK::B(G)+S(E),DCHECK
- R(e);N_GUARD::B(G)+S(E),XR(e)
- R(e);N_GUARD::B(G)+S(E)
- B(a);N_GUARD::R1(B),XB(a)
- B(a);SBLOCK::B(G)+S(E),DCHECK
- B(a);S_CUTR(e)::B(G)+S(E)
- S(i);N_GUARD::R(L),XQ(h)
- Tries
- Try
- Q(I);
- Threat
- B(G)+S(E),DCHECK
- Vars
- Q(h);CHECK,OGATE::R(L),XQ(h)
- P(f);OGATE,XP(D)::QAR1(I),XP(f)
- R(e);::B(G)+S(E),DCHECK,XR(e)
- B(b);N_GUARD::QAB1(I),XB(b)
- Refutation
- R(e);XB(G)
- Try
- Q(I);
- Threat
- QAB1(I)
- Vars
- Q(h);CHECK,OGATE::R(L),XQ(h)
- B(b);N_GUARD::QAB1(I),XB(b)
- Refutation
- R(e);XQ(I)
- Try
- Q(I);P_PINR(e)
- Vars
- Q(h);CHECK,OGATE::R(L),XQ(h)
- Q(h);N_GUARD,N_SPINQ(h),XR(L)::B(G)+S(E)
- R(e);N_SPINR(e),XQ(I)::B(G)+S(E),XR(e)
- B(a);N_GUARD,XR(B)::QAR2(I),XR(e)
- B(a);XP(H)::B(G)+S(E),XB(a)
- P(f);XP(D)::B(G)+S(E),XP(f)
- B(a);N_GUARD::R1(B),XB(a)
- Q(h);OGATE::R1(L),XQ(h)
- Q(h);N_GUARD::B(G)+S(E),XQ(h)
- R(e);::B(G)+S(E),DCHECK
- B(a);N_SPINR(e),SBLOCK::B(G)+S(E),DCHECK
- B(b);SBLOCK::B(G)+S(E)
- S(i);::B(G)+S(E)
- S(i);N_GUARD::R(L),XQ(h)
- Refutation
- B(a);
- Try
- Actual
- Q(I);P_PINR(e)
- Vars
- Q(h);CHECK,OGATE::R(L),XQ(h)
- Q(h);N_GUARD,N_SPINQ(h),XR(L)::B(G)+S(E)
- R(e);N_GUARD,N_SPINR(e),XQ(I)::B(G)+S(E)
- B(a);N_GUARD,XR(B)::QAR2(I),XR(e)
- B(a);XP(H)::B(G)+S(E),XB(a)
- P(f);XP(D)::B(G)+S(E),XP(f)
- B(a);N_GUARD::R1(B),XB(a)
- Q(h);OGATE::R1(L),XQ(h)
- Q(h);N_GUARD::B(G)+S(E),XQ(h)
- R(e);::B(G)+S(E),DCHECK
- R(e);N_GUARD::B(G)+S(E),XR(e)
- R(e);N_GUARD::B(G)+S(E)
- B(a);N_SPINR(e),SBLOCK::B(G)+S(E),DCHECK
- B(a);::B(G)+S(E)
- B(b);SBLOCK::B(G)+S(E)
- S(i);::B(G)+S(E)
- S(i);N_GUARD::R(L),XQ(h)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).